JPH0331622A - Air conditioner - Google Patents

Abstract

PURPOSE:To make the indoor temperature distribution ideal with more warmth around the lower part of the body than the upper part by a method wherein an indoor machine capable of switching the outlet for air according to heat or cooling is provided, the indoor machine is made to communicate with the void in a double floor, openings are formed in the ceiling board as passage through which the ceiling chamber communicates with the room, and openings are formed in the double floor as passages connecting the void to the room. CONSTITUTION:In heating, a fan 23 rotates in the normal direction; the indoor air is sucked through openings-ceiling 31 and into an upper outlet 28, and by undergoing heat exchange at a heat exchanger 21, the air turns to warm air. The warmed air flows into an air duct 26 through a connection port 25 and is conveyed through a lower outlet 30 to a void 14 in a double floor 5; through openings-in-floor 15 bored in the double floor 5 the warmed air is ejected into the room, mainly into a living region 6 therein, at very low air speed. The warmed air thus ejected warms the living region 6 and then flows through openings-in-ceiling 31 into a ceiling chamber 16 and sucked into the upper outlet 28. In coding, the fan 23 rotates in reverse so that the indoor air is sucked through the openings-in-floor 15 into the void 14; then through the lower outlet 30 into the air duct 26, and through the connection port 25 into the indoor machine 19.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an air conditioner, and particularly to control of the air blowing from the air conditioner.

BACKGROUND OF THE INVENTION In recent years, in order to improve the comfort of a space created by an air conditioner, particularly the indoor temperature distribution, control of the blowing air has become important.

Therefore, the applicant has proposed the following air conditioner in order to improve the indoor temperature distribution.

1 is the ceiling board 2. The room is defined by the side wall 3.4 and the double floor 5, and the space surrounded by the two-dot chain line in Figure 4 is the living area 6, which is ASHRAE 5TANDARD and has a height of 1.
This area is defined as a space with a distance of 800 mm or less and a distance of 600 ff or more from the side wall.

On one corner floor of the chamber 1, an upper blower lower blower is provided at the upper part and a lower blower outlet 8 is provided at the lower part, and above and between the lower blower blower 8, a heat exchanger 9 and a top and bottom blower outlet switching means are installed. An indoor unit 13 incorporating a fan 1o capable of forward and reverse rotation and a blower 12 made of a casing 11 is disposed.

The lower air outlet 8 is connected to the hollow part 14 of the double floor 6, and the double floor 6 is provided with floor openings 16 that communicate the hollow part 14 and the chamber 1 evenly over the entire floor surface. ing.

Next, the operation of the air conditioner configured as described above will be explained.

During cooling operation, the fan 10 rotates in the normal direction, and the air flows upward as shown by the dotted arrow in FIG. 6, passing through the heat exchanger 9, and the cooled air is blown upward from the upper blowing lower. Ru.

The cold air flowing upward hits the ceiling board 2, and from there spreads downward due to its own weight and descends. After cooling the living area 6, the air is sucked in through the opening 16, passes through the hollow portion 14 of the double floor 6, and is sucked in through the lower outlet 8 (also used as suction during cooling).

On the other hand, during heating operation, the fan 1o is set to rotate in the opposite direction, and as shown by the solid line in FIG. Through, opening 1
Blows out from 5. At this time, since the hot air passes through the double bed 5 while heating it from below, the temperature of the double bed 6 increases, and the room 1 is indirectly heated by natural convection. Further, warm air is blown into the room 1 from the opening 16 at a slight wind speed (0.35 m/8 or less), and is sucked in from the upper blowing lower (also used as suction during heating) without warming the room 1. Thereafter, the air heated by the heat exchanger 9 is blown out again from the lower outlet 8 by the fan 10.

Therefore, during cooling, cold air is blown upward from the upper blowing lower of the air conditioner, hits the ceiling board, and then naturally falls under its own weight, creating a space with a uniform temperature distribution without discomfort caused by the wind. Also, during heating, warm air is blown from the lower outlet 8 into the hollow part 14 of the double floor 6, warming the double floor 6, and blowing out from the opening 16 of the double floor 6 at a slight speed. In addition to achieving uniform temperature distribution without causing discomfort,
High-quality air conditioning can be achieved by adding the heat radiation effect from the floor.

Problems to be Solved by the Invention However, in the above configuration, cold air is blown upward from the indoor unit 13 provided in one corner of the room 1 during cooling.
The interior of the living area 6 is cooled by letting the cold air fall naturally under its own weight, and the cold air falls without reaching areas far away from the indoor unit 13, thereby uniformly cooling the entire living area 6. The problem was that it was not possible.

Also, during heating, the warm air blown out from the opening 16 is sucked into the indoor unit 13 installed in one corner of the room 1.
The hot air blown out from the opening 16 distant from the indoor unit 13 does not rise upward as it is, but rises diagonally upward, resulting in a problem that heating of the area far away from the indoor unit 13 becomes insufficient. .

The present invention solves the above-mentioned problems, and provides an air conditioner that allows cold and hot air to naturally fall and rise even in areas away from the indoor unit, creating an ideal temperature distribution indoors with cold heads and warm feet. The purpose is to

Means for Solving the Problems In order to achieve the above object, the air conditioner of the present invention is equipped with an indoor unit that can switch the blowout according to heating/cooling operation, and has a hollow section between the indoor unit and the double floor. The ceiling plate is provided with a ceiling opening that communicates with the ceiling chamber and the room, and the double floor is provided with a floor opening that communicates between the hollow part and the room.

Function: With the above-described configuration, the present invention blows out warm air from the floor opening provided in the double floor during heating operation, allows the warm air to rise naturally, and heats the room, and during cooling operation, it blows out hot air from the floor opening provided in the double floor. Cool air is blown out from the opening in the ceiling and allowed to fall naturally to cool the room. Through heating and cooling, it creates an ideal temperature distribution that keeps your head cool and your feet warm, without any discomfort caused by the wind.

EXAMPLE Hereinafter, an example of the present invention will be explained with reference to FIGS. 1 to 3. In addition, explanations are omitted for those that are the same as before.
Only the points of difference will be described.

FIG. 2 is a configuration diagram showing an embodiment of the present invention.

In the figure, 16 is a ceiling chamber defined by ceiling plate 2 and slab 17, and 18 is a window made of double glass.

19 is an indoor unit, and an outer shell 20. It is composed of a heat exchanger 21 and a blower 22. The blower 22 is composed of a fan 23 and a casing 24.

The fan 23 is an air outlet switching means and can rotate in forward and reverse directions. Reference numeral 25 denotes a connection port provided at the lower part of the back surface of the indoor unit 19, and is located at the end of the casing 24. 26 is a ventilation passage, and space portions 26a and 2θb constructed on the outer wall 27
and a space 26c between the double panes of the window 18, the upper part of which is connected to the connection port 26. 28
is an upper air outlet opening into the ceiling chamber 16 at the front of the indoor unit 19. 29 is a looper that controls the direction of air blown out from the upper outlet 28. 3o is a lower air outlet provided at the lower part of the air passage 26, and opens into the hollow part 14 of the double floor 6.

A plurality of floor openings 16 are uniformly perforated in the double floor 6 over the entire area of the floor surface in the living area to communicate the hollow part 14 and the room.

In addition, a plurality of ceiling openings 31 are uniformly perforated in the ceiling plate 2 over the entire area of the ceiling plate surface for communicating the ceiling chamber 16 and the room.

Next, the operation of the air conditioner configured as described above will be explained.

During heating operation, the fan 23 rotates normally, and indoor air is sucked in through the ceiling opening 31 from the upper air outlet 28 (acts as an inlet during heating), as shown by the solid arrow in FIGS. 1 and 2. Rarely,
The heat exchanger 21 exchanges heat and turns into warm air. Then, it flows along the casing 24 and passes through the connection port 26 to the air passage 26.
After flowing into the hollow part 14 of the double floor 5 from the lower air outlet 30, a light wind velocity (for example, 0.35 m /s or less). The warm air blown into the room warms the living area 6 and then flows through the ceiling opening 31 into the ceiling chamber 16.
, and is sucked in from the upper outlet 28 to repeat the same process.

Here, the warm air blown out from the floor opening 16 has a low specific gravity and the suction port is located on the two ceiling panels directly above, so it becomes a vertical upward flow and is sucked into the ceiling opening 31. , it is possible to heat the inside of the living area e evenly and without feeling any airflow.

On the other hand, during cooling operation, the fan 23 rotates in reverse, and as shown in Figs.
As shown by the dotted line arrow in the figure, indoor air is sucked in through the floor opening 15 provided in the double floor 6, and after passing through the hollow part 14,
It flows into the air passage 26 from the lower air outlet 30 (acts as a suction port during cooling) and enters the indoor unit 19 from the connection port 26 . The air then flows along the casing 24, undergoes heat exchange in the heat exchanger 21, becomes cold air, and flows from the upper outlet 28 into the ceiling chamber 1e.
After being blown out into the room, it is blown out into the room from the ceiling opening 31, and the same process is repeated thereafter.

At this time, the cold air blown out from the ceiling opening 31 has a high specific gravity, and since the suction port is located on the double floor directly below, it will not flow vertically downward and be sucked into the floor opening 16. The interior of the living area e can be cooled evenly.

According to the above embodiment, during heating, hot air is blown out at a slight speed from the floor opening 16 drilled in the double floor 5, sucked in through the ceiling opening 31 bored in the ceiling board 2, and the warm air rises vertically. By creating a flow, a very uniform temperature distribution can be obtained without the discomfort caused by the wind, and with the addition of heat radiation from the floor surface, high-quality air conditioning can be achieved.

In addition, during cooling, cold air is blown out from the ceiling opening 31 drilled in the ceiling board 2 and sucked in through the floor opening 16 bored in the double floor 6, creating a vertical downward flow of cold air, so there is no discomfort caused by the wind. A very uniform temperature distribution can be obtained.

Furthermore, since the space between the double-glazed windows of the window is used as a hot and cold airflow path, discomfort caused by hot radiation from the outside air is avoided in the summer, and discomfort caused by cold radiation and cold drafts is avoided in the winter. This allows high quality air conditioning to be achieved.

Further, in this embodiment, the floor and ceiling openings are provided evenly over the entire floor and ceiling surfaces, but more holes may be provided in areas where residents work to function as personal air conditioning.

Effects of the Invention As is clear from the above description, the present invention provides an indoor unit having a built-in heat exchanger and a blower for blowing temperature-conditioned air conditioned by the heat exchanger, and a slab installed in the indoor unit. an upper air outlet communicating with a ceiling chamber defined by a ceiling plate; an air duct having a length extending to a hollow portion of the double floor at the bottom of the indoor unit; and an air duct communicating with the air duct and communicating with the double floor. A lower air outlet opening in the hollow part, and an air outlet switching means for switching the air outlet of these upper and lower air outlets according to the heating or cooling operation mode, and a blower opening that penetrates the double floor and connects to the hollow part. A plurality of floor openings are provided in the living area to communicate with the room, and a plurality of ceiling openings are provided that pass through the ceiling panel and communicate between the ceiling chamber and the room, so that radiant heating is provided from below the living area. This heating method blows hot air from the floor and sucks it into the ceiling while maintaining its effectiveness, achieving a very uniform temperature distribution without causing any discomfort caused by the wind.In addition, during cooling, cold air is blown from the ceiling and lowered by its own weight to the floor. The air-conditioning system uses a cooling method that draws air into the room, achieving a very uniform temperature distribution without the discomfort caused by wind.

Furthermore, by using the space between the double-glazed windows as a ventilation channel, it is possible to prevent discomfort caused by hot or cold radiation from the outside air and tool drafts that occur near windows in winter, creating a comfortable space. It is possible to form

In this embodiment, the upper and lower air outlet switching means is handled by switching between forward and reverse rotation of the fan, but the air outlet may be switched using a switching damper or the like.

In this embodiment, the lower air outlet is used as the suction port during cooling, and the upper air outlet is used as the suction port during heating, but it goes without saying that a dedicated suction port may be provided separately.

In this embodiment, the hollow part is formed by a double floor, but it goes without saying that the same effect can be obtained even if the hollow part is provided under the floor.

In this embodiment, an outer wall and double glass are used as the air passage, but a duct may also be used.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an air conditioner showing an embodiment of the present invention;
Figure 2 is a cross-sectional view of the main parts of the air conditioner, Figure 3 is a perspective view of a room in which the air conditioner is installed, Figure 4 is a cross-sectional view of a conventional air conditioner, and Figure 6 is Figure 4. FIG. 6 is a perspective view of a conventional air conditioner. 1...Room, 2...Ceiling board, 5...
...Double floor, 6... Living area, 14...
Hollow part, 15... Floor opening, 16...
Ceiling chamber 17...Slab, 19...
...Indoor unit, 21...Heat exchanger, 22...
...Blower, 23...Outlet switching means (fan), 2e...Blower duct, 28...Upper outlet, 3o...Lower blower Exit, 31...Ceiling opening.

Claims (1)

[Claims] an indoor unit that includes a heat exchanger, a blower that blows temperature-conditioned air that is conditioned by the heat exchanger, and a ceiling chamber that is disposed in the indoor unit and that communicates with a ceiling chamber that is defined by a ceiling plate and a slab. an upper air outlet, an air duct having a length extending to the hollow part of the double floor at the lower part of the indoor unit, a lower air outlet communicating with the air duct and opening into the hollow part of the double floor; An air outlet switching means for switching the air outlet from the upper and lower air outlets according to heating and cooling operation modes, and a plurality of floor openings penetrating the double floor and communicating the hollow part and the room are provided in the living area. An air conditioner further comprising a plurality of ceiling openings that penetrate the ceiling plate and communicate the inside of the ceiling chamber with the room.